Question 713Steam Plants - Assistant Engineer

The correct answer is A) disengage the turning gear. Before starting the main turbines, it is important to disengage the turning gear. The turning gear is used to slowly rotate the main turbines when the vessel is not underway, in order to prevent distortion and uneven heating of the turbine components. Disengaging the turning gear is a critical step to ensure the turbines can be brought up to operating speed safely and smoothly when getting underway. The other options are incorrect because they do not directly relate to the preparation of the main turbines for getting underway. Circulating the lube oil, securing the gland sealing steam regulator, and inspecting the reduction gear are not necessary steps prior to rolling the turbines.